I remember when New York City experienced a shortage of bitters when there was a sudden spike in popularity of drinks such as the Old Fashioned or the Manhattan (possibly dues to the prevalence of those drinks on the show, Mad Men)
(The classic Angostura bitters are easy to get in Delaware. It's sold in most grocery stores I've seen)
The A. B. Smeby Bittering Company came up with the brilliant (and in hindsight, obvious) idea to make local bitters.
Their flavors vary rather far from the Angostura bitters that I'm used to, which smell and taste of something like cloves and nutmeg:
Apple Cinnamon with Molasses
Black and White (as in the cookie)
They don't seem to make a gentian root flavor, which is what the angostura bitters are made from. Gentian grows in Tobago and not in the Brooklyn area, and they claim that "Flavor ingredients are sourced from within New York State"
I'm not sure a Manhattan made with "Cherry Vanilla" bitters would even count. Still, a fun idea.